Amazing 3D Optical illusion

Amazing 3D Optical illusion

 A new book collects the 3D street art of Kurt Wenner, a former NASA employee, who uses his mathematical skill to create three-dimensional illusions on pavements across the world.

Bahrain crushes protest camp, locks down capital

MANAMA, Bahrain – Troops and tanks locked down the capital of this tiny Gulf kingdom after riot police swinging clubs and firing tear gas smashed into demonstrators, many of them sleeping, in a pre-dawn assault Thursday that uprooted their protest camp demanding political change. Medical officials said four people were killed.

Hours after the attack on Manama's main Pearl Square, the military announced a ban on gatherings, saying on state TV that it had "key parts" of the capital under its control.